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ardor

American  
[ahr-der] / ˈɑr dər /
especially British, ardour

noun

  1. great warmth of feeling; fervor; passion.

    She spoke persuasively and with ardor.

    Synonyms:
    intensity, earnestness, spirit, fervency
  2. intense devotion, eagerness, or enthusiasm; zeal.

    his well-known ardor for Chinese art.

  3. burning heat.


Etymology

Origin of ardor

1350–1400; Middle English < Latin, equivalent to ārd ( ēre ) to burn + -or -or 1; replacing Middle English ardure < Old French ardur < Latin, as above; 17th century ardour < Anglo-French < Latin, as above

Explanation

Are you inspired to write love poems to your crush? Sprinkle rose petals in her path? Then you're feeling ardor — an intense kind of warmth and fervor most often associated with love. The Brits spell ardor with an extra vowel, so you'll often see this word written as ardour. But on either side of the pond it's a noun that brings to mind Pepe Le Pew and his fervent pursuit of the female species. But ardor isn't always about love. It's perfectly platonic to be "an ardent supporter" of a certain cause, or show eagerness and ardor in your approach to anything.

Keep Reading on Vocabulary.com

Vocabulary lists containing ardor

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

He policed brushback pitches with ardor and once called a night game for darkness when lighting malfunctions compromised visibility near home plate.

From The Wall Street Journal • Feb. 26, 2026

Investors could well lose some ardor for Ferrari if it can’t get the electric rollout right.

From Barron's • Oct. 9, 2025

Van Patten and De Domenico plausibly capture that youthful ardor while making it obvious why their displays of affection translate poorly to local police officials unprepared to investigate a murder that quickly drew international scrutiny.

From Salon • Aug. 20, 2025

Despite her creeping cynicism toward politics and its appropriation of movie style, Didion hadn’t lost her ardor for film.

From Los Angeles Times • Mar. 10, 2025

He also harbored a peculiar ardor for the inner rail.

From "Seabiscuit: An American Legend" by Laura Hillenbrand